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The rotational speed of an electric motor is determined not only by the supply frequency but also by how many magnetic poles are created in the stator. As the pole count increases,... More Details

A frequency inverter provides large energy savings by flexibly adjusting the motor's speed; but this benefit comes with an invisible side effect: electrical noise. The inverter dri... More Details

Choosing the right electric motor is not enough on its own; the cable that feeds that motor must also be chosen correctly. A wrongly chosen supply cable becomes the weak link of th... More Details

There is only one sound way to understand whether switching to an efficient motor makes sense: do the math. The sentence "a high-efficiency motor saves energy" is true but abstract... More Details

One of the most vulnerable points of an electric motor is where the shaft leaves the frame. At this point a small gap must remain between the rotating shaft and the stationary fram... More Details

Before an electric motor fails, it almost always gives a warning: vibration. Bearing wear, imbalance, misalignment, looseness or electrical problems all leave a trace in the motor'... More Details

Some loads are simply too large to fit within the power of a single motor. A belt conveyor hundreds of metres long, the lifting system of a heavy bridge crane, or the drive of a la... More Details

Whenever an electric motor burns out in an industrial setting, the same question arises: should we rewind this motor or buy a new one? Rewinding is the process of stripping out the... More Details

When an electric motor runs, the job of the winding insulation is not only to carry energy; it is also to separate the live conductors from the frame, and the frame from the people... More Details

On a cold winter morning, an electric motor waiting outdoors or in a chilled warehouse meets conditions at its first start that are very different from those in a warm environment.... More Details

How quickly a motor can bring a load to the desired speed depends on a critical quantity that is often overlooked yet determines both the starting behavior and the life of the moto... More Details

The insulation of large-power electric motors ages silently and over the years. This aging is usually invisible from the outside, until one day the winding insulation collapses and... More Details

The path to selecting the right motor often does not run, as is commonly assumed, through looking only at the power value. What really matters is the character of the load the moto... More Details

An electric motor cannot convert all the energy it draws into mechanical work; part of that energy inevitably turns into heat. In most facilities, this heat is seen as a loss that ... More Details

There is a single graph that best describes the character of an induction motor: the torque-speed curve. This curve shows how much torque the motor can produce at every speed from ... More Details

Looking only at the price tag when buying an electric motor is like seeing only the visible tip of an iceberg. The economic reality of a motor reveals itself across the years you r... More Details

How much load an induction motor can carry, how long it will last and under which conditions it can operate safely are all tightly bound to a single physical phenomenon: the temper... More Details

No matter how high the power of an electric motor is, that power is useless if it cannot reach the shaft. The shaft is the bridge that transfers the rotary motion and torque the mo... More Details

When evaluating the noise of an electric motor, there are two concepts frequently encountered in catalogs and on nameplates: sound power and sound pressure. These two quantities, w... More Details

The life of an electric motor begins not the moment it is first started, but the moment it leaves the factory. Most facilities do not commission a motor immediately after purchasin... More Details